2-(3-isocyano-3-tosylnonyl)-2-methyl-1,3-dioxolane

2-(4-phenylsulfonyl-3-oxobutyl)-2-methyl-1,3-dioxolane

ethylene ketal of O,O-diethyl-4-oxo-pentanephosphonate

2-(phenylthio)octanal

溴已烷